JP4559906B2 - Electric floor heating system - Google Patents

Description

  The present invention relates to an electric floor heating system having a wire heater as a heat source and an operation method thereof.

  An electric floor heating system having a line heater as a heat source is known. After placing the wire heater on the floor foundation, place the wooden flooring on it, or place it on the floor foundation while electrically connecting the wooden flooring with the wire heater integrated into it. The electric floor heating system. The line heater is mainly supplied with electric power from a commercial power supply via a controller. The controller includes functions such as specifying a heating area, starting and stopping energization, adjusting a heating temperature, and detecting an abnormality (see Patent Document 1, Patent Document 2, and the like).

  In the case of floor heating, a large amount of energy is required during the start-up operation until the room is warmed, but a comfortable heating effect can be obtained with relatively little energy during the steady operation after the room is warmed. Therefore, in the conventional operation method of the electric floor heating system in which the heat source is a wire heater, the start-up operation of 100% energization is performed for a certain period of time (for example, about 30 minutes) after the start of energization, thereby quickly After that, the power is turned on, and thereafter, an energization ON-OFF operation is performed according to a change in room temperature or floor temperature.

  The controller incorporates a start-up operation mode and a subsequent steady-state operation mode, and switches from the start-up operation mode to the steady-state operation mode when a pre-programmed duration time of the start-up operation elapses. The energization rate at the start of the steady operation mode may be selectable by the user, such as 100% energization rate, 80% energization rate, and 60% energization rate. In addition, there is also a device that can change the energization rate.

  For example, in the case of an electric floor heating system of 100 W per heater panel, the maximum power at the start-up operation with 100% energization is 100 Wh, and the maximum power consumption at the steady operation after the start-up operation is 100 Wh. By appropriately selecting the energization rate, the operation can be performed with a smaller amount of power.

Japanese Unexamined Patent Publication No. 7-248122 JP-A-10-185222

  If there is no significant change in the temperature environment conditions and floor ground environment conditions of the place where the electric floor heating system is installed, comfortable floor heating can be obtained continuously. However, when the room temperature before start-up becomes lower than originally planned, the start-up operation conditions set as standard may cause a delay in the rise of the room temperature or insufficient heating. For example, by using a higher-power line heater such as 120 W, the above-described inconvenience at the start-up can be avoided. However, the conventional controller includes an operation mode with 100% energization at the time of steady operation, and when the steady operation is continued in this mode, the output becomes too large, resulting in partial thermal blockage and low temperature burns. There is a risk of causing. Further, since the safety device frequently causes intermittent interruption, it is necessary to take care such that a temperature management system (for example, a safety device equipped with a thermostat) during steady operation has higher accuracy.

  The present invention has been made in view of the circumstances as described above, and provides an electric floor heating system capable of simultaneously satisfying both rapid startup and safety during steady operation and an operation method thereof. The purpose is to provide.

  An electric floor heating system according to the present invention is an electric floor heating system including at least a line heater that is a heat source and a controller that includes at least an energization rate control unit capable of controlling an energization rate P to the line heater, The line heater is a line heater having a rated output Wt that is higher than a set output Ws during steady operation of the electric floor heating system, and the controller includes a start-up operation mode performed at a 100% energization rate, and the steady operation. And a switching means for switching to a steady operation mode in which operation is performed at an energization rate Ps of 100% or less without exceeding the set output Ws at the time.

  The operation method of the electric floor heating system according to the present invention is an operation method of an electric floor heating system provided with a line heater that is a heat source, and is used as a line heater in a steady operation of the electric floor heating system. Use a line heater with a rated output Wt greater than the set output Ws, operate at 100% energization rate during start-up operation, and exceed the set output Ws during normal operation during start-up operation. It is characterized by operating at an energization rate Ps having no.

  In the present invention, as a line heater, a line heater having a rated output Wt (for example, 120 W) larger than a set output Ws (for example, 100 W) required for steady operation of the electric floor heating system is used as a heat source, and Basically, the heating value control of the wire heater is performed by energization rate control. In the start-up operation mode, operation is performed at 100% energization rate Pt. Thereby, a rated output Wt of 120 W can be obtained, and a quick start-up environment can be created.

  After a predetermined start-up time has elapsed, the controller switches to the steady operation mode. In the steady operation mode, the controller operates at an energization rate Ps of 100% or less that does not exceed the preset output Ws during steady operation. In order to cause low-temperature burns, high output does not occur during steady operation. For example, when the maximum output Ws in a steady state is set in advance as 96 W, which is recognized as a safe output value based on conventional experience, it is steady at an energization rate Ps of 80% (= 96 W / 120 W) or less. Set the controller in the controller to run. Thereby, the safety | security at the time of steady operation is also ensured.

  Switching means for switching from the startup operation mode to the steady operation mode provided in the controller is arbitrary and is not particularly limited. It may be a means for manually switching the switch after the user recognizes that the startup operation time has elapsed. However, from the viewpoint of safety and ease of operation, it is desirable to provide a timer circuit in the controller so that the start-up operation mode is automatically switched to the steady operation mode after the set time has elapsed.

  It is also preferable to further include means for selecting the energization rate Ps at the start of the steady operation mode from a plurality of set values. For example, an energization rate setting that allows the controller to set different energization rates Ps (for example, Ps = 80%, 70%, 60%) according to the location conditions and construction ground conditions of the place where the electric floor heating system is to be constructed. A circuit and means for sending out information on the electrification rate Ps selected for the circuit are provided, and energization during steady operation suitable for an electric floor heating system to be installed when a contractor installs a controller at a construction site. Information on the rate Ps is selected and given to the control unit in advance. More specifically, for example, a plurality of dip switches corresponding to Ps = 80%, 70%, 60%,... Are provided in the controller, and the contractor selects an appropriate dip switch at the time of construction. When the operation mode is switched to the steady operation mode, the control unit instructs the operation rate setting circuit to operate with the energization rate Ps at the time of the steady operation selected in advance.

  In addition, a push button switch, etc. is provided on the control panel of the controller so that the user can personally make a personal preference within the range of safe use aimed at avoiding excessive temperature rise and preventing low-temperature burns due to thermal blockage in advance. The energization rate Ps at the start of the steady operation mode may be appropriately selected depending on the temperature or the ambient temperature at the end of the start-up operation.

  The above-mentioned trader may be provided with both means for setting the current supply rate Ps in advance during construction and means for allowing the user to further select the current supply rate Ps within the range of safe use.

  The controller may be provided with means for switching the energization rate Ps (for example, 80%) at the start of the steady operation initially selected from 70% → 60% → 50% in the course of the steady operation. A floor heating environment can be obtained.

  In addition, there is no restriction | limiting in particular in the whole structure of the electric floor heating system in this invention, For example, after arrange | positioning a line heater on a floor foundation | substrate after arrange | positioning a line heater on the floor foundation, In the form constructed by placing the material on the floor, or in the form constructed by placing the wooden floor material with the wire heater integrated on the floor substrate while being electrically connected. All included.

  ADVANTAGE OF THE INVENTION According to this invention, the electric floor heating system which can satisfy both the quick start-up and the safety | security at the time of steady operation simultaneously is obtained.

  Hereinafter, the present invention will be described with reference to embodiments. FIG. 1 is a schematic diagram showing an electric floor heating system according to the present invention, FIG. 2 is a block diagram showing an overall control system, and FIG. 3 is a pulse waveform showing energization rate control in the system. FIG. 4 is a control flowchart.

  In FIG. 1, a line heater 11 as a heat source is disposed on a floor substrate 10, and a large number of wooden floor materials 12 in which concave grooves for accommodating the line heater 11 are formed on the back surface are laid. Electric floor heating floor is made. Although not shown in the figure, an electric floor heating floor may be made by placing a wooden floor material in which a line heater is integrated into a floor base while being electrically connected. In any case, commercial power from the outside is supplied to the wire heater 11 via the wiring 13, and a controller 20 is attached in the middle of the wiring.

  The line heater 11 is a line heater similar to that used in the conventional electric floor heating system, but a line heater having a rated output Wt larger than the set output Ws during steady operation of the electric floor heating system is used. It is done. Similar to the controller used in the conventional electric floor heating floor, the controller 20 performs a start-up operation with a 100% energization rate for a predetermined time from the start of energization, and thereafter performs a steady operation that repeats ON-OFF. The configuration as long as it has the same configuration as the conventional controller, but with a circuit that limits the energization rate Ps at the start of steady operation after the start-up operation ends Is different. Hereinafter, the difference will be mainly described.

  FIG. 2 is a block diagram showing a control system of the entire electric floor heating system. The electric floor heating system according to the present invention includes a controller 20 and a line heater 11 whose energization amount (energization rate P) is controlled by the controller 20. It consists of. The controller 20 includes a control unit 30, and a storage unit 40, an operation panel 31, and a drive circuit 50 are connected to the control unit 30.

  The control unit 30 includes a timer circuit 32, and switches the operation mode from the start-up operation mode to the steady operation mode after elapse of a preset time Z.

  The storage unit 40 has associated data 41 between the output W of the line heater 11 and the energization rate P. Specifically, it is related data of the output Ws below the rated output Wt and the energization rate Ps when the energization rate Pt at the rated output Wt of the wire heater 11 is 100%.

  The operation panel 31 is used to select the system ON-OFF switch 35, the tee spray 36 indicating the start-up operation mode or the steady operation mode, and the energization rate Ps at the start of the steady operation or an energization rate Px lower than that. The push button switch 37 is provided.

  The drive circuit 50 is a circuit for supplying power from the power supply line 13 to the heater 11 and incorporates a switching circuit 51 as an example of means for performing energization rate control. The switching circuit 51 has a switching element such as a thyristor, and the conduction rate P to the heater 11 is controlled by varying the conduction period of the switching element. Although not shown, a signal from a thermostat attached to the heater 11 is also fed back to the drive circuit 50, and energization ON / OFF control during steady operation is also performed as in a conventionally known controller.

  As shown in FIG. 3, the control unit 30 sends a pulse signal having a period T to the switching circuit 51. This pulse signal makes the switching circuit 51 conductive in the high level period t1, and makes the switching circuit 51 nonconductive in the low level period t2. The control unit 30 waits for the timer 31 to elapse and raises the high-level period t1 of the pulse signal from the operation mode t1 = T (corresponding to 100% energization) to the steady operation mode t1 <T (set in advance). Equivalent to an energization rate of 100% energization or less). The control unit 30 further includes a dip switch 38. The dip switch 38 is a switch for selecting a different energization rate Ps in steady operation, and the control unit 30 relates to the storage unit 40 according to a signal from the dip switch 38. Information relating to the energization rate Ps in steady operation is obtained from the data 41 and is output to the drive circuit 50.

  The driving operation will be described with reference to FIG. The user turns on the ON-OFF switch 35 of the operation panel 31 (step 301). The control unit 30 reads the dip switch 38 selected in advance (step 302). Start-up operation is started (step 303), and the timer 32 is activated (step 304). The controller 30 instructs the switching circuit 51 of the drive circuit 50 about the energization rate Pt (100% energization rate: t1 = T) at the rated output Wt of the line heater 11 and starts the operation for starting up the 100% energization rate. (Step 305).

  It waits for the start-up operation time Z set in the timer 32 to elapse (step 306). After the elapse of time Z, the control unit 30 issues a steady operation instruction (step 307). As a result, the switching circuit 51 has a t1 (<T) signal corresponding to the energization rate Ps during steady operation based on the dip switch 38 read in advance, that is, a steady output that is lower than the rated output Wt of the heater 11. A signal t1 (<T) corresponding to the energization rate Ps corresponding to the operating output Ws is sent, and the drive circuit 50 enters a steady operation at the energization rate Ps (<Pt) (step 308).

  At the same time, an indication that the steady operation has been started is displayed on the display 36 of the operation panel 31. If desired, the user can select the push button 37 on the operation panel 31 to select a different energization rate Ps1 (<Ps) within the safe use range. In that case, a t1 signal corresponding to the selected energization rate Ps1 is sent to the switching circuit 51 via the control unit 30 (step 309), and steady operation at that energization rate is started (step 310).

  As described above, in the electric floor heating system according to the present invention, the line heater 11 is provided with a line heater having a rated output Wt larger than the set output Ws during the steady operation of the electric floor heating system. Occasionally, the operation is performed with the rated output Wt of the wire heater 11, and after the start-up operation for a predetermined time Z, the operation is performed with the energization rate Ps set so as not to exceed the set output Ws (<Wt) during steady operation. Since this is done, it is possible to satisfy both the quick start-up and the safety during steady operation at the same time.

Schematic which shows an example of the electric floor heating system by this invention. The block diagram which shows the control system of the whole electric floor heating system. The figure explaining the pulse waveform which shows the electricity supply rate control in a system. Flow chart of control.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Floor base, 11 ... Wire heater, 12 ... Wood type flooring, 13 ... Wiring, 20 ... Controller, 30 ... Control part, 31 ... Control panel, 32 ... Timer circuit, 38 ... Dip switch, 40 ... Memory | storage part, 41... Data related to the output of the wire heater and the energization rate, 50... Drive circuit, 51.

Claims (2)

An electric floor heating system including at least a wire heater that is a heat generation source and a controller that includes at least an energization rate control unit capable of controlling an energization rate to the line heater,
The line heater is a line heater having a rated output larger than a set output at the time of steady operation of the electric floor heating system,
The controller includes a switching means between a start-up operation mode performed at a 100% energization rate and a steady operation mode operated at an energization rate of 100% or less without exceeding the set output during the steady operation, and a steady operation during construction. An electric floor heating system comprising first selection means for selecting an energization rate at the start of an operation mode . The controller further comprises second selection means capable of selecting an energization rate at the start of the steady operation mode within a range of energization rates selected by the system user with the first selection means. The electric floor heating system according to 1.

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